CVE-2021-31227

Description

An issue was discovered in HCC embedded InterNiche 4.0.1. A potential heap buffer overflow exists in the code that parses the HTTP POST request, due to an incorrect signed integer comparison. This vulnerability requires the attacker to send a malformed HTTP packet with a negative Content-Length, which bypasses the size checks and results in a large heap overflow in the wbs_multidata buffer copy.

Weakness classification

• nvd@nist.gov: CWE-787

Primary references

• cve@mitre.org — Mitigation, Third Party Advisory
• cve@mitre.org — Third Party Advisory, US Government Resource
• af854a3a-2127-422b-91ae-364da2661108 — Mitigation, Third Party Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory, US Government Resource